Detroit Series 60 6 Cylinder 14.0 L Ultra Low Sulfur Diesel 425 hp Engine, Digital Mirrors, Engine Brake, Eaton Fuller FR-14210B 10-Speed Manual Transmission, 12000 lb Front Axle, 23000 lb Rears, 35000.0 lb GVWR, Air Ride Cab, 295/75R22.5, Airliner Air Ride Suspension, 158 in Wheelbase, Air Sliding 5th Wheel